/*******************************************************************************
 * Copyright (c) 2010 György Orosz.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     György Orosz - initial API and implementation
 ******************************************************************************/
package org.erlide.wrangler.refactoring.codeinspection;

import java.io.File;
import java.util.ArrayList;

import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IViewReference;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.erlide.engine.model.IErlElement;
import org.erlide.util.ErlLogger;
import org.erlide.wrangler.refactoring.codeinspection.view.CodeInspectionResultsView;
import org.erlide.wrangler.refactoring.codeinspection.view.GraphImageView;

/**
 * Manages the displaying of the Graph View
 *
 * @author Gyorgy Orosz
 *
 */
public class CodeInspectionViewsManager {
    public static final String GRAPH_VIEW = org.erlide.wrangler.refactoring.codeinspection.view.GraphImageView.VIEW_ID;
    public static final String CODE_INSPECTION_VIEW = org.erlide.wrangler.refactoring.codeinspection.view.CodeInspectionResultsView.VIEW_ID;

    /**
     * Shows the image in the graph view with the given title.
     *
     * @param img
     *            image
     * @param title
     *            view title
     * @param secondaryID
     *            view secondary id
     * @param dotFile
     *            .dot file which is displayed
     */
    static public void showDotImage(final Image img, final String title,
            final String secondaryID, final File dotFile) {
        final GraphImageView view = (GraphImageView) showView(GRAPH_VIEW, secondaryID);
        view.setViewTitle(title);
        view.setImage(img);
        view.setDotFile(dotFile);
    }

    /**
     * Shows Erlang elements in a list view
     *
     * @param title
     *            view title
     * @param e
     *            Erlang elements
     */
    static public void showErlElements(final String title, final ArrayList<IErlElement> e,
            final String secId) {
        try {
            final CodeInspectionResultsView v = (CodeInspectionResultsView) showView(
                    CODE_INSPECTION_VIEW, secId);
            v.addElements(e);
            v.setViewTitle(title);
            v.refresh();
        } catch (final Exception ex) {
            ex.printStackTrace();
        }
    }

    /**
     * Shows a view.
     *
     * @param viewId
     *            view id, which is shown
     *
     * @return view which is shown
     */
    static public IViewPart showView(final String viewId) {

        final IWorkbench workbench = PlatformUI.getWorkbench();

        final IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
        try {
            final IViewPart view = window.getActivePage().showView(viewId);
            return view;
        } catch (final PartInitException e) {
            ErlLogger.error(e);
        }
        return null;
    }

    /**
     * Shows a an instance of a view
     *
     * @param viewId
     *            view id
     * @param secondaryID
     *            view secondary id, to handle multiple instances
     * @return view object
     */
    static public IViewPart showView(final String viewId, final String secondaryID) {
        final IWorkbench workbench = PlatformUI.getWorkbench();

        final IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
        try {
            final IViewPart view = window.getActivePage().showView(viewId, secondaryID,
                    IWorkbenchPage.VIEW_ACTIVATE);
            return view;
        } catch (final PartInitException e) {
            ErlLogger.error(e);
        }
        return null;
    }

    /**
     * Hides a view.
     *
     * @param viewId
     *            view, which will be hidden
     */
    static public void hideView(final String viewId) {
        hideView(viewId, null);
    }

    /**
     * Hides an instance of a view
     *
     * @param viewId
     *            view id
     * @param secondaryId
     *            secondary id of a view instance
     */
    static public void hideView(final String viewId, final String secondaryId) {
        final IWorkbench workbench = PlatformUI.getWorkbench();

        final IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
        IViewPart view;
        final IViewReference viewr = window.getActivePage().findViewReference(viewId,
                secondaryId);
        if (viewr != null) {
            view = viewr.getView(false);
            if (view != null) {
                window.getActivePage().hideView(view);
            }
        }

    }
}